Razor-stropper.



G. M. HBRRING.

RAZOR STROPPEB.

APPLICATION FILED OUT. 7, 1910.

Patented 0cc.22,1912.

3 SHEETS-SHEET 1.

'0. M. HERRING. .:BAZ( )B. STROPPBR. APPLICATION FILED OCT. 7, 1910.

Patented Oct, 22, 1912.

3 SHEETS-"SHEET 2.

Elma/MM 6.74%6/ /013 G. M- HERRING.

RAZOR STBOPPBB..

APPLICATION FILED 0017, 1910.

Patented 01:11. 22, 1912.

Qm My ear. Fe

I i "-1 I; To @Ugwhomit mqytflncernf Bait known t-l,lf1t,,I, CHARLES M Hnannve, citiacnloflthc United States, residing at Fort Wortlnin the county ,of' T arrant and ;State 5'01 "f ljexas, have Qimgented certain new and useful; Improvements in Razor-Stroppers, of which. the followingis a specification. v

invention elates to ,machines i-for sharpening blades suci as, razonblades, and the object of the invention is to provide a imple andfeasily'operated machine so lv, constructed so to quickly and perjrpcn a large number of different "kinds ofrazorblades, both the 1 blades and the blades such as are narilyfound onthe old style razor.

furtl er object". of the" invention is to provide ".niezinsffon locking the stro-pping lnembeisfroln action before the blade can be removed front-1, engagement with the st-ropping n em-bers, "thus eliminating any chance of cutting the .stropping rolls or members when inserting or removingthe razorf. e A. further object is to provide means for stropping alternatefaces of .theblade and to provide for holding the; blade resiliently against thestropping fa cos of the stropping members.

Other objects will appear in the the following description.

For a full understandi course of I ng ofthe invention reference is to be had to ,the following description and accompanying drawings, in

which i 1 'is a.;perspcctive view of my razor stropperi with a blade in position to be stropped. Fig. 2 is a rear. elevationthereof. Fig, ais. a; section on theline 373 of- Fig. 2.

40 Fig. 3*..is anend view of one ofthe stro'pping membersand tiportion of: arazor blade showing the relative positions ofthe stroppingmember and razor. blade at one point in the revolutionary stroppin ember, Fig.

4 is a. like view t o .,Eig. 3 tfshowing the 1 blade in 00 tact,with1.pne1,of:the stro-pping faces-h is'a section'on tl1e [line .5- 5" of h t as t p si ipn 9 th -lac g lever when the rotatablest rop-persarelocked for movement. -.Fig. Gisside,elevation-0i,

qthe device showing theisidewplates and slot p vid for. th see ntiw .915. .1 3 9 p vided with ahandle. a,Jtiigs. .andS are fragmentary sectional views i-pf a, rotatable strep-,-

5 ping member showing another 'means for stima es irethaashep i a e corresl-londing 101 like parts are referred j and have the form-of but-tons so asto permit the machine to be placed upon any article of furniture and manipulated withoutmar. ring the furniture and add to the steadiness 11 is rigidly attached to the face of the gear- .aand the shaft 8 will rotate in a clockwise rormon.

to in the following description and indicated in all the viewsof the accompanying drawingsby the same reference characters. Referring particularly now. tojFigs. .1, 2

and 3, 2 designates the frame of the ma chinegcomprising a substantially.U-shapedmetal plate provided on its under side with the feet?) which are, preferably, of rubber,

of the machine. The upper edges of the sides of a the frame are connected by the transversely extending spacing rods 4, 5 and 6, which are held in position between the upwardly turned sides of the plate 2 by means of screws 7. Extending through the sides of the; and rotatably mounted therein are the st 8 and 9, these being arranged pai 0 each other and carrying stro-pping devices as will be later described. These shafts 8 and .9 are designed to rotate together, but in oppositedirec-tions and are intended both to be driven from acommon crank. Rotatably mounted to one side of the framefplate12,.- preferably to the right-hand side'giihleii'elif is' the toothed gear wheel 10 to whioli'fis'ait t-ached the crank 11, the extremity of the crankarni being offset as at 12 and being provided with a handle 13. The crank-arm wheel 1.0 so as to rotate the same. Mounted upon the shaft 9 is a pinion 14 which meshes with the gear wheel 10 so that the motion of the gear wheel is transmitted to the pinion Hand the shaft 9. Rigidly attached to ,.the shaft 9 on the inside face of one of the sides of. the frame is the gear-Wheel 15 whose teeth; mesh with. the teeth of a gear-wheel 16 fast; onthe shaft '8. It will thus be seen that themotion of the gear-wheel 15' will be transmitted by the gear-wheel 16 to the shaft..8 and that this shaft will rotate in the opposite direction to the. shaft 9. In the operation of sl'iarpening,.the gear-Wheel 16 i 105 d'irectionand the gear 15 and shaft 9 will rotate ina counter clockwise direct-ion. 4 ach fwthe shafts 8- and 9 Upo n10unted;..a rotatable; stroppe h s s Yrpers ilv be lesf e h later on. g In general, lho vevera e ch; per consists of a. ,rectang ila mating the shape of a cylinder having oppo-' sitely disposed curved stropping faces covered with stropping material 18. The strop-.

ping frames are longer in one direction than the other-and the frames are so set that the stropping face of one frame onstropping member acts alternately to the stropping face of the other member, as shown in Fig. 3, the frames projecting, of course, beyond the gears 15 and 16. Y

The stropping faces on each frame, each follow in the path of the other while in operation. The stroppers are arrangedto pass each other and alternately engage with the blade which depends between them and is supported by the devices now to be de-- scribed. z t

The blade to be sharpened is supported in a blade holder which is so mounted upon the frame of the machine that it may be moved up out of its stropping "positionin order for the blade. to be inserted or re-- moved, or moved down into the stropping position whereupon the blade will be held midway between the two rotary stroppers in position to have its edge acted upon by both of said stroppers. The particular form ofv the holder depends upon the particular kind of blade which is to be supported therein, as will be later seen, but generally speaking the blade holder comprises an angular plate 20, one end of which is formed with a tubular sleeve or head 21 forloose-engagement with .the transverse rod 4, while the downwardly extending portion 22 of the holder is provided with clamping means whereby the blade may be securely clamped in position. This clamping means variesaccording to the different kinds of blades tobe sharpened.

It is necessary that means he provided for locking the stropping devices in a safety position, when the blade is to be removed or replaced, to prevent injury to the blades or stroppers. To this end I provide the locking lever 23 which is pivoted to the side of the frame 2,near the'lower edge thereof as at 24, and which is provided at .its upper end with a longitudinally extending slot 25. This locking lever 23 is provided at one side opposite to the shaft 9 with an outwardly projecti ngldetent 26 having a rounded terminal end. A spring 27 is attached at one end to the locking lever 23 and at its other end is attached to a fixed point, as'a stud 28, projecting out from the side plate of the frame. This spring 27' acts todraw the lever 23 toward the shaft 9. Mounted upon the shaft 9 exterior to the gear wheel 15' and rigid with the shaft 9 is a cam-wheel -29 having oppositely disposed recesses 30 in its circumference. These recesses are adapted to receive the detent 26 when the parts are in the position shown in Fig. 5. It will be seen fromFig. 4 that one wall of the recess is rounded as at 31, while the othei" wall of the recess extends outwardly 'pe dicularly to the face of the cam. It will also be seen from Fig, 5 that when the detent 26 is engaged with one of the recesses 30 the gear wheel 15 is locked from rotation in the direction of the arrow and this lock-I ing of the gear wheel 15, ofcourse, locks" the gear wheel 16, and thus both of the rota-v table stroppers areheld from rotation. The backward rotation of the wheel 15' is prevented by a pawl 32 which engages with the teeth on the wheel 15. This pawl is actuated by a spring. 33 in any suitable manner. While the pawl will permit a rotation of the gear wheel -15 1n thedirection of the arrow, it will prevent an backward rotation of the gear wheel and hence, when the detent 26- on the lever 23 -is engagedwith one of the recesses'30 the It will be obvious that as the was is.

rocked the lever 23 will be moved either into its locking position or into its unlocked position as shown in dotted lines in Fig. 5..

The rod 5 is provided at its middle with the outwardly projecting finger 36' 'which is adapted to project through a slot 37 formed in the angular holder 20. This slot is so placed that the finger will project there'- through when the holder 20 has been moved into its active position. \Vhen the holder} 20 has been depressed so as tobring the blade into proper position to be stroppedthe' rod 5 is rotated by means of thefinger' 36 and this rotation will move the locking'lever- 23 from the position shown in full'lines-in Fig. 5 to the position shown in dotted lines.

and thereby move the locking lever out ofengagement with the. gear-wheel 15. 'In

order to hold the finger 36 depressed I preferably provide the holder 20 with a latch 38 which is adapted to be moved. into such position as to hold the fingerf36 depressed. Preferably this latch is yL-shapedand is pivoted near one end as at 39, while the; other end of the latch is upwardly turned as at 40 to form a means whereby the latch may be easily operated. When the 'fingen 36 has been depressed to the dotted hneposition in Fig. 5, and the finger 36 locked in its depressedposition, the mechanism is in condition for sharpening the blade supported in the holder 20; i

It will be seen that theblade is supported l willbe rotated ,in the arrows, in Fig.v 3. A strope one side of the blade and l against'the resiliency of ti older.

l p it o ,;a;nd isimmediately en- ,01 er 17 and is'forced forsiliency of the blade ,nthat-the blade holder sition upon, the frame leans of the finger 3G The resiliency of the dethe holder acts to resist nt in either direction of portion caused by the strop- 2,0 pflljs lternately forcing the depending portion a from its i normal position. It will he ee that thenorn'lal position of the blade ljderjis,midway between the shafts andas the stroppers are rotated d e ishforced outward anththe resist- :f theresilient holder causes it to bear against the. rounded edge of the stroppers atjthe proper angle to insure a perfect cutting edge td the blade. The pressureof the bladei against the stroppers is secured by the resiliency ofjtliepo tions- 20 and 22 of the hfi d v l ,Tli'e operation of. the parts so far deserib d is asfollowspln order to insert the the latch'fisis turned, releasing finger vheijeuj ion ,the spring 1 willinnnedilro eyer 23. toward the shaft 9. rod 5 and .turn the finger ybe, rotated upon l lg l 4. The holder tis t 'ned ov er u i tlieroclgtand the clampdevice upon theliolderloosened- .and the 1 l After; he bladeis clamped e helder the holder is ed to its forn el -position with the 2 'lexteiigling doyrn between the he stroppers being locked from ,iop ,under these circumstances by geme it of the-tooth 26 with. the reige 36 is. then turned down rning down of the tinand' causes the lever 23 w ay frem its engagement with x 9 ad -the. parts. are ready for ping pei ation, The lefthand of 2.1 fiwpl l d p the pp P he; maehin, the transverse bars 4,

,1 U N affording a rest for the left hand. The r ightflhand is .then used to tu n pl hus grotating the stroppers and in alternately into contact with aces ofthe blade. 1 l

'with an labove described tress the h s. 8 and ffcrank 11 is operated,

on negofthe rotary stroppers.

A After the stropper cs lthe blade, the blade returns to wardly extending position,: I

and the widefiat plate forming he' will be seen that; the blade holder cannot be withdrawnfrom? its operative-position until the latch finger 36 has beenraised, and

from its operative position. When the finger 36 is raised it throws the tooth 26 into the notch 30 locking the stropping members. The parts will remain in; this locked position until the finger 36 is again'moved down. Unless this finger be intentionally moved down the parts .will remain in the position shown in Fig. 5 until the holder is again depressed and locked. The stropping members l'i' and 17 are so relatively arranged that they arevery slightly beyond the position shown in Fig. 3 when the recess 01' notch 30 intersects with the tooth 26, and in this position-they eannotcome in contact with the blade as the holder is rotated to its operative position. Thus the blade cannot be inserted so as to cut the stropping 0 members. It will be seen that the blade can only be inserted or removed when the stropping members are brought to the position shown in Fig. 5, and immediately that finv ger 36 is turned up so as to release the 5- blade holder the stropping members are" locked. It is pointed out, furthermore, that; because of the fact that the stropping mem her 17 has the form in section of a segment of a circle, and that because at the time 10 9 when the holder is being turned down to its operative position the stroppingmember 17? is in the positionshown in Fig. 5, the strapping member is entirely out of the path of movement of the blade. This would not be the case were the stropping member circular in section. The blade holder would have to be inserted vertically into place between the two stropping members. The blade holder is pivoted to theframe of the machine, the pivotal point being the bar -.1-. Hence the blade holder can be turned to a position that is convenient toremove or insert the blades and yet cannot be lost-or displaced. upon the machine itself. Itfis f ;ermanently attached] to the machine and is simply locked to the cross bar5 when in" it's operative position. The blade 'holder cannot beraised out of its operativeposr tion when it is locked. Itwould only move in a plane parallel with the plane of rota-' tion of the stropping member. The resiliency of the depending portion 22- of the blade holder permits its lateral movement at the lower end of the plate 22, but the lock mg of the blade holder to the bar 5 prevents any movement of the upper end of the blade holder. As a consequence the stropping members Will always strike at the same point uponthe blade andthe blade will .130

not chatter nor shift its position relative to the stropping members as the stropping members are rotated.

Particular attention must be paid to the form of the stropping surfaces 18. It will be seen from Fig. 3 that each stropping face 18 has a middle portion (a) concentric to the axis of rotation of the stropper and that the edges of the stropping face are rounded gradually relieved of its pressure against the stroppers. At its first contact with the blade the stropping face gently begins its work on the blade, the rounded edge of the stropping face striking at the proper angle onto the blade to give it a perfect cutting edge. The pressure on the blade in crewes until the smooth fiat face of the sti upping surface is reached, whereupon the pressure is uniform until the rounded edge 6 is reached, when the pressure is gently reduced until the blade is allowed to ass from the stropping face into contact with the strop-.v ping face on the opposed 'stropper.

peculiar contour of the stropping face 18 is The , necessary in order to give a properst-ropping action-upon the blade. It""-is'1rlso to -be noted that as the frames supporting the stropping faces 18 turn against the edge. of the blade, the spring holder resists any lateral flexure and the blade is resiliently held against the rounded edge and the concentric I smooth surface of the strOpper tends to give the blade a perfect cuttin edge. Thepressure of the blade against t e stropping faces depends either upon the diameter of the stropping frame or. the strength of the spring metal holder 20. By enlarging the diameter-of the stropping frame or increasing the resilient strength of the downwardly extended portion 22, a greater pressure against the blades may be secured. The stropping faces 18 are preferably, not quite one fourth the circumference of a cylinder thus allowing the stroppers to pass each other.

While the stropping .frames 17 and 17 may have any desired construction suitable to the purpose, I have shown in Figs. 1 and 2 the frame as made of a single strip of metal bent into a rectangular form, the sides of the frame being concave or convex. The

ends of the metal strip are bent at right angles to the sides as shown '1 Fig. 1. Another way of constructing the stropping frames and supporting thestropping leathery faces 18 is shown in Figs. '7 and 8.

shown in Fig. 14, the leather18 may be bent under or returned upon as at 18 and over the side plates 17-,'- th'e lea'ther being held in lace b a clip plate 17 having, spurs wh1ch pro ect into the .returned' edges;

of the leather, or the leather 18, as shown in y be Sim 1y turned around 'the,

side plates 17 and he d by. clips18.

The stropping faces 18 "may be made-off.

leather or any other suitable material and-1i one stropping face on each frame may be of a relatively gritty material and'the other stropping face'on the same frame may be of a smooth, soft and finishing'quality. This will give a sharp, keen edge to the blaa n which would not be afforded were'the strop-j ping faces all of the samequality. h twg frames supporting the stroppers are secured at the top and are so arranged'upon the shaft as to allow them to pass each other as shown in Fig. 4 to permitja continuous rotation forcing the stroppers alternat'ely against the blade upon each revolution.

f 5 to the shafts and turned toward each other 4 As before stated means must be provided for supporting the blades in such a position as to be acted upon by the oppbsitely'disposed stroppers and preferably the device should be provided with means whereby any of the usual forms of razor blade may be so supported. As these forms are various it is necessary to provide either a holder for the blades, which shall be capable of engaging and clam ing. any of the ordinary formsof razor bla e, or provide separate holders which are particularly adapted to these} .eral specific forms.

While I do not wish to limit myself to any particular form of holder for use with thestropping mechanism deseribed, I have illustrated in Figs. 1, 2,3 and 4a form of blade holder or clamp which is applicable to a great number of different blades. The plate 22 forms one ofthe jaws of this -clamp, and supported upon the faceof the plate '22 is an opposed clamping plate designated 42, these two plates being drawn together by a thumb screw 46 or other equivalent-means and the blade being clamped between them} as illustrated in Figs. 3 and. 4. The plate 42 is provided with a flange 42. at its up-. per end which contacts with the plate 22 and spaces the plate 42 from the plate 22,- and disposed between these two plates 22 .and 42 is a gage designated 49 having a flange 50 at its lower edge and vertically movable upon a set screw 53. This gage engages withthe upper edge of the blade, and once adjusted and held in position by the set screw 53, all bladesof the same kind or width can be 'readrlyinsertedin" the holder and held tightly, in position: therein u imia: ele e saw-ea roan-reaed .havingaazhandlen In fpriii ofle bifl t id ates pfathe frani w is fel r'flefi .eaqwnwardl a *cflrv -1eaeegaec erm1 herpassage o-frthehantlle iabladetgis designated tandem...

elaaioridesigfiatedtfifl It willhandlewprojeets out from nd 83 of the slot=80, the a-clanip such as is shown e slot 80 is'venlarged at 83 gs orvibrating motion a a the-i' bladeis' "pressed by one stro per 0 the other in one direction l a f I r that ny device affords a mpleyand easily operated a extremely. eflective for the 'Dhe'blade is acted upon 11g idesof' its cutting edge by stroppersand is resiliently held eppingsurface. Furthermore an that-Pit is subjected at each d .of the'stropping surface and nbentric orsmooth surface a middle-portion of the stropping This affords a very much better ropping a razor than if the inst a cylindrical face at all "d 1h d with a. practically unvaryressnre' a a'inst this face. It gives the inspect iarpressure which is incident nd, this peculiar pressure y any other automatic vice known to me. I "shown what I believe to be of :my invention, I do not thereto, as it is obvious finight be made without om thef'spirit thereof. sde'scribed my invention, what l""nied'a newts! zfor stropping device including oplle'lf rotatable stroppin memgoppositely disposed, paral- 'd 'stropping faces approxito the laxis (if rotation of in mem er, t e stro ing t of said members being arg a, alternately upon the blade, a i 1, pon-vqhic'h the stropping, members are *rotaably-"metered, and a blade support pomp!" 'ng a resilient plate mounted'upon 5 th atfit's upper end the free end of depending a plane intersecting fjinovement of the strop ing faces F tli t" a n 'of thestropping mempping device including a '-'stroprping member 'rohe ame and-havin rsp H -parallel 'interru-p es approximately conentrl,

"nerahawieaiia ofima'chineradapt thelstropping surface, first to the 'tion,and"m'eans for. locking the 1 v tro'ppingjmembers and being yieldthe taxis *of' the stropping mem.

her, a resilient support pivotally mounted nupon said frame and when 1n operative posi- I I -tion extending in ,a. plane intersecting the :pathof; movement ofthe stropping mem-H.

ber, 'said resilient support being yieldable at nits free end in the direction of thestropping "member, and means for preventing an upward movement of the. blade support.

3. A razor stropping device'including parallel rotatable stropping members, each having oppositely disposed parallel interrupted stropping faces approximately concentric to the axis of rotation of the stropping member, the path of movement of the stropping faces of one memberintersecting the path of movement of the other member, the major axes of the stropping membersbeing always out of alinement with each other, a frame in which the stroppin mem-' bers are supported, a resilientbla e support comprising an angular plate pivotally mounted upon said frame, the angularend of the. supportjwhenjn operative position extending in. a plane midway between the axes of the supportin members and coincident with the intersection of said paths of movement of the strgipping members, said plate being yieldable at lts free end in the direction of the stropping members, and disengageable means preventing the upward movement of the plate.

4. A razor stropping device including parallel rotatable stropping members each having parallel interrupted stropping faces approximately concentric to the-axis of rotation, the stropping faces of the members acting alternately and the paths of movement of the stropping faces intersecting, and a blade support comprising a resilient plate1o5 extending when in an operative position a plane coincident with a plane cutting th intersection of the paths of movement, th end of the plate farthest from the stroppin members being held from movement' -away from the stropping members,' the free end-ofsaid support being resiliently yieldable in, the directionof the stropping members. y l

5. A razor stropping device including a,-. rotatable stropping member having the form of a segment of a circle, a blade hgl able in position tosupport a bl'" the path of movement of said locking the blade holder in oper i members from rotation when th locking device is. shifted to an unlocked-po sition. 4 a

6. A razor stropping device including a vrotatable stropping member having the form of a segment of a circle, a blade holder mov- 1 able into position to support a blade within the path of movement of said stropping member parallel thereto, and means for lock- 13o ing the stropping members from rotation when the blade holder is moved from its operative position.

7 A razor stropping device including opositely disposed rotatable stropping memers, a resilient blade holder extending midway between the axes of the stropping, members, and means for locking the stropping members against rotary movement in either di ection.

A- razor stropping device, including oppositely disposed rotatable stropping members. a resilient blade holder extending in-a plan e midway between the axes of the stropping, members and having means thereon for supporting a blade with its edge projecting into the paths of movementof said stropping members, means for detachably locking said Holder in said position, and means for locking the rotatable stroppers from move ment simultaneously with the release of the blade holder from its locked engagement.

9. A razo'r stropping device, includin a supporting frame, parallel oppositely isposed stropping members having oppositely disposed interrupted stropping faces, the

aths of movement of said stropping faces intersecting each other, a resilient. blade holder rotatably supported upon said frame and adapted to be turned into or out of a plane cutting the intersection of the paths.

of movement of said stropping members, means on the frame for locking the-holder in said last named position and from rotation but permitting the release of the holder,

and means for locking the rotatable stro ping members from rotation simultaneous y with the release of the holder from its locked position.

razor stropping device, including a gsupporting frame, oppositely disposed parallel rotatable stropping members each hav ing opposed faces concentric to the axis of the corresponding member, sa1d faces acting alternately, a resilient blade support piv- 'otally mounted upon said frame and being thereby adapted to be turned'into an operative or inoperative position, the said holder when turned in an operative position extending in a plane coincident with the intersection of the paths of travel of the stropping faces of the rotatable members, a latching device for holding the blade'holder in its operative position, said latching device being adapted to be moved to release the blade holder and permit it to be turned into its inoperative position, and means for looking the stropping members from movement when the latching device is moved to release the blade holder.

11. A razor stropping device, Including a supporting frame, oppositely disposed parallel stropping members mounted on the frame, means for rotating said stropping members in opposite directionsto each other,

' ing provided with means for clamping a blade thereto, and a latching device mounted on the frame and adapted to detachably engage the blade holder and lock it 'in'it's operative position. if.f

12. A razor stropping device, including a supporting frame, parallel oppositely d sposed rotatable stropping members mounted on said frame each having oppositely disposed stropping facesconcentridto the axis of rotation of. the member, said stropping faces acting alternately, a transverse} bare mounted on saidlsupporting frame-imme diately -fabov'e said stropping members, a transverse bar parallel .to but spaced from "said firstf'na-med transverse bar, an angular. ,bladeiholder pivotally mounted upon the Test na med transverse bar and extending ,overthe first named transverse bar and then extending downward in a plane midway be tween the. axes of the rotatable. stro'pping rmembers, means on the depending portion of the holder for clamping a razor blade thereon, and a latch mounted upon thesupporting frame detachably engaging the oldenrtg lock it in its operative position.

a supporting frame, parallel oppositely disposed rotatable stropping members each tatable stropping members.-

a supporting frame, parallel rotatable shafts mounted in the frame, intermeshing gear wheels'mounted on said shafts, means for giving a rotation to one of saidlshafts, a. stropping member mounted on each shaft,

disposed interrupted facesconcentric tothe shaft on whlch it is mounted the 'stropping faces ofo ne member during the rotation of said member traversing the intermediate 14. A razor stroppi'ng device, including each stropping member having oppositely" 13. A razor stropping device, including having oppositely disposed faces concentric ping faces to prevent the rotation of the gear wheel' when the lever is moved in one direction, a. rock shaft mounted in the supporting frame and having an arm engaging with the end of the lever, a finger on the rock shaft whereby it may be moved, a resilient blade holder pivotally mounted upon the supporting frame and adapted to be moved into a plane extending midway between said rotatable shafts, blade to be sharpened to said holder.

and means for clamping a 115 A razor stropping device, including a supporting frame, parallel shafts mounted on the "frame, intermeshing gear wheels carried bysaid shafts, a crank on one of said shafts whereby it may be rotated, op-

positely disposed stropplng members carried upon said shafts and rotatable therewirh, each of said stroppingmembers having the form of asection. 0 acylinder having parallel sides and oppositely disposed curved stropping faces,- said stropactingalternately, the paths of travel of the faces of the respective stropping members intersecting, a disk mounted upon one of said shafts and. having a radially extending recess, a lever pivotally mounted upon the supporting frame at its lower end and having a detent adapted to engage in said recess when the lever is .moved in one direction, a rocleshatt also mounted in the supporting frame and having an arm engaging the upper end of'said lever to shift it into or outof locking engagement with the disk when the rock shaft is rotated, a finger projecting from the 'sitely disposed rock shaft, otally mounted upon the supporting frame at one end, the other angularly extending end of the blade holder being provided with blade clamping devices, said blade holder being adapted to be turned down over the rock shaft with its clamping end extending in a plane midway between the rotatable stropping members, the blade holder being provided with an opening through which the finger on the rock shaft is adapted to project, means on the holder for locking the finger in a depressed position, and a spring acting to shift the locking lever from its locking engagement with the gear wheel and to rotate. the rock shaft to turn the finger thereon in a vertical position and permit the release of the blade holder there from.

16. Arazor-stropping device including parallel oppositelydisposed stropping members each having the form of a section of a cylinder having parallel sides and oppointerrupted curved stropping faces parallel with each other, the stropping faces of one member alternately traversing the sides of the other member. the paths of travel of the stropping member intersecting, the curved faces of the stropping members being concentric to the axis of rotation and the opposite marglns of said faces being beveled so as to form faces approximately tangential to the path of movement of the stropping faces.

In'testimony whereof, I affix my signature in presence of two witnesses;

\Vitnesses: R. V. ALLEN, J VV. TURNER.

an angular blade holder pivfaces of each 

